Texas River Basins

The United States Geological Survey uses 21 primary geographic groupings, or regions, at the first level of classification to split and subdivide the

Surface Water – Texas Hill Country Water Resources

Map of the Northeast Texas River basins containing the rivers

Nature, Not Humans, Has Greater Influence on Water in the Colorado

Statistical Assessments of River Flow Alterations and

Human Activity in Watersheds

River Basins - Colorado River Basin

Texas River Guide - Habitats - Land & Water - TPWD

River Basins - Colorado River Basin

Texas Rivers, Creeks and Lakes Map

2.3 Major River Basins and Surface Water Features

Grasshopper Geography Print

River basin map of Texas with white background

Principal aquifers of Texas, with rivers superposed

San Jacinto Special Finds

Watersheds : Upper Trinity River Basin comprehensive sewerage plan